[BUG] errors on the page of a meet-up under review

Hi Local Guides team,

a fellow local guides just created a meet-up and shared it with me.

I noticed that the page stuck on the loading animation and there are some errors logged that I would like to share with you. Here a screenshot:

I’m using Google Chrome: Version 61.0.3128.2 (Official Build) dev (64-bit) on Windows 10 Version 1703